SE-0304 (2nd review): Structured Concurrency

[xAlien95 (Stefano De Carolis)]

@hisekaldma

I’ll just mention the one thing that sticks out to me: withTaskGroup(of:) reads pretty awkwardly and doesn’t really promote clarity at the point of use.

I suggested TaskGroup(of:) because task groups are AsyncSequences, you interact with them by looping over and the type that each child task returns is the type of the element of the sequence.

@xAlien95

Task.Group<TaskResult> conforms to AsyncSequence and TaskResult is its Element type. "A task group of Ints" as an async sequence of Ints.

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@hisekaldma

[...] crucially it doesn’t call out the one thing that is most important to the reader, namely that subtasks are executed concurrently

Is it true? Isn't concurrency dependent on the executor that is handling the parent task? If the executor is sequential there won't be concurrent child task.